The touchpad that is connected to the board have 1.5 metre of cable.

I have only used the capacitors and the serie resistors for products that needed
to have an approval.

But if I understand you right you also mean that the software debouncing will do the job.
I think that I will just try to make the board without capacitors and serie resistors on the input's and see what happen when it goes to approval.

Sharky